app.js

const https = require("https");
const http = require("http");


http.createServer(function (request, response) {
    response.writeHead(200, {'Content-Type': 'application/json'});

    const req = https.request('https://xxxxxxxxxxxxx.com/data.json', (res) => {
        console.log(`STATUS: ${res.statusCode}`);
        console.log(`HEADERS: ${JSON.stringify(res.headers)}`);
        res.setEncoding('utf8');
        res.on('data', (chunk) => {
            const data = JSON.parse(chunk);
            const sensors = [];
            for (const id in data.readings) {
                const sensor = {};
                const sourceSensor = data.sensors[id];
                sensor.label = sourceSensor.label;
                const readings = data.readings[id];
                for (const k of ["hum_temp", "stamp", "hum_hum", "lux", "bar_pres_rel", "vbat", "vreg", "id"]) {
                    if (k === 'stamp') {
                        sensor[k] = readings[k] * 1000
                    } else {
                        sensor[k] = readings[k]
                    }
                }

                sensors.push(sensor);
            }
            response.end(JSON.stringify(sensors));
        });
        res.on('end', () => {
            console.log('No more data in response.');
        });
    });
    req.end();
}).listen(8081);